SP i have a couple suggestions: dont try to argue with your potential customers (or their piers) just let the troll's troll and and let your products do the talking.
to sell this product you should put a gopro under the car facing the rear diff (where it normally "moves"). then take video of the car launching or something like that. then put on the brace and film from the same angle cathing the elimination of the movement.
just my .02